Idiot light. On the highway. 86 GP, 305

[foxtrot]

Here's some good CCC info that shows which two oins to jump on the diag conector:
http://www.robertpowersmotorsports.com/CCC.html

also a good read for general CCC info.

 

[Bonnewagon]

Here ya go. Sorry I clipped off a couple of lines. You jump "A" and "B".

 

[megaladon6]

guess i don't have to un-bury mine then

 

[ilduce]

Cool. Is it the black connector under the dash about four inches from the parking brake release? There's two rows of six slots, the top row has five pins in there and the bottom row has one pin (corresponding to the upper row without a pin). Am I golden, is this the fleece?

 

[Blake442]

My money is on the oxygen sensor.

 

[ilduce]

Cool. It's that black connector near the parking brake release.

I got a bunch of 12s, a 53, and then some more 12s. According to the link on that CCC thing, the EGR sensor is receiving improper vacuum from the EGR. Will I need to replace the EGR valve and the sensor thing it's hooked up to?

 

[carpenter383]

Cool. It's that black connector near the parking brake release.

I got a bunch of 12s, a 53, and then some more 12s. According to the link on that CCC thing, the EGR sensor is receiving improper vacuum from the EGR. Will I need to replace the EGR valve and the sensor thing it's hooked up to?

Before you spend any money I would first check to see if the egr valve is holding vaccume. The easiest way would be with a vaccume pump like a mightyvac. And you might want to take the egr valve off and clean it too, they tend get carboned up which causes them to stick.

 

[Bonnewagon]

This is why you need a factory manual. Code 12 means all is well. Code 53 is this >>>>

 

[ilduce]

Thanks for the info. I swapped the EGR solenoid with a much cleaner unit I found and still a light on the highway. These solenoid/sensor deals are impossible to find new, so I'll just live with the light. It could be a faulty code.

 

[ilduce]

A couple days ago I checked EGR valves on the car when idling and lifted up on the diaphragm. Sure enough the idle speed dropped. I even killed it one time. But, the light comes on after 10 minutes of highway action, the b*st*rd.

Today I took the EGR off, squashed the diaphragm in and threw a vacuum port cap on the nipple. Held tight. Did some chores and the diaphragm was almost all the way out when I got done fifteen minutes later. It's not holding the vacuum by itself. It's supposed to, right? I don't have a vacuum gauge so this was my space-age function test.